I don't have a fancy image, but this would be my starter tier list.
S: Meganium, Torterra, Serperior, Greninja, Decidueye, Primarina
A: Venusaur, Typhlosion, Blaziken, Swampert, Empoleon, Incineroar, Rillaboom
B: Charizard, Blastoise, Feraligatr, Sceptile, Samurott, Chesnaught, Cinderace
C: Infernape, Emboar, Delphox, Inteleon
S Tier Explanation: I may or may not have a Grass starter bias. Anyways, Meganium and Torterra are just the examples of good design. Meganium not be a standout, but it works that way honestly. Torterra's whole "forest on it's back" thing is also incredible design wise, not to mention it's rather useful. Serperior similarly has a good design and good offensive prowess. Greninja doesn't need explanation, Decidueye looks awesome, and I just like Primarina's design.
A Tier Explanation: All the Pokemon here have good designs and abilities, but I don't like them as much as the S Tier picks, I just like the designs and abilities of these guys.
B Tier Explanation: I like Charizard, but its design is kind of boring nowadays, while Blastoise is good but not great honestly. Sceptile is not very good in battle, Samurott is a downgrade from Dewott in some senses, Chesnaught is forgettable, and Cinderace isn't the best design, but not the worst either.
C Tier Explanation: Infernape, Emboar, and Delphox's designs are not very good, and are very much downgrades from the pre evos. Inteleon also just looks weird, and not in a good way.
Explanations in short.